package com.atguigu.gulimall.product.service.impl;

import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import com.atguigu.gulimall.product.dao.AttrAttrgroupRelationDao;
import com.atguigu.gulimall.product.dao.AttrDao;
import com.atguigu.gulimall.product.dao.AttrGroupDao;
import com.atguigu.gulimall.product.dao.CategoryDao;
import com.atguigu.gulimall.product.entity.AttrAttrgroupRelationEntity;
import com.atguigu.gulimall.product.entity.AttrEntity;
import com.atguigu.gulimall.product.entity.AttrGroupEntity;
import com.atguigu.gulimall.product.entity.CategoryEntity;
import com.atguigu.gulimall.product.service.AttrService;
import com.atguigu.gulimall.product.service.CategoryService;
import com.atguigu.gulimall.product.vo.AttrGroupRelationVo;
import com.atguigu.gulimall.product.vo.AttrRespVo;
import com.atguigu.gulimall.product.vo.AttrVo;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.CollectionUtils;
import org.springframework.util.StringUtils;

import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;


@Service("attrService")
public class AttrServiceImpl extends ServiceImpl<AttrDao, AttrEntity> implements AttrService {
    @Autowired
    private AttrAttrgroupRelationDao relationDao;
    @Autowired
    private AttrGroupDao attrGroupDao;
    @Autowired
    private CategoryDao categoryDao;
    @Autowired
    private CategoryService categoryService;


    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                new QueryWrapper<AttrEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveAttr(AttrVo attrVo) {
        //1、首先给`pms_attr`表中保存基本信息
        AttrEntity attrEntity = new AttrEntity();
        //单个封装比较麻烦，用工具类 BeanUtils （前提页面来的vo和数据库entity字段名一致）
        //attrEntity.setAttrName(attrVo.getAttrName());
        BeanUtils.copyProperties(attrVo, attrEntity);
        this.save(attrEntity);

        //2、保存关联关系  pms_attr_attrgroup_relation`  基本属性才保存
        if (attrVo.getAttrType().equals(ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode())&&attrVo.getAttrGroupId()!=null) {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity
                    .setAttrId(attrEntity.getAttrId())  //这里是上面保存完自增的id
                    .setAttrGroupId(attrVo.getAttrGroupId());
            relationDao.insert(relationEntity);
        }

    }

    @Override
    public PageUtils queryBaseAttrPage(Map<String, Object> params, Long catelogId, String type) {
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("attr_type", "base".equalsIgnoreCase(type) ?
                ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode() : ProductConstant.AttrEnum.ATTR_TYPE_SALE.getCode());
        if (catelogId != 0) {
            //基本类型查询1,否则查询0
            queryWrapper.eq("catelog_id", catelogId);
        }
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            //前面还有一个条件，和当前的两个条件选其一
            queryWrapper.and(wrapper -> wrapper.eq("attr_id", key).or().like("attr_name", key));
        }
        IPage<AttrEntity> page = this.page(
                new Query<AttrEntity>().getPage(params),
                queryWrapper
        );
        PageUtils pageUtils = new PageUtils(page);
        List<AttrEntity> records = page.getRecords();
        List<AttrRespVo> respVos = records.stream().map(attrEntity -> {
            AttrRespVo attrRespVo = new AttrRespVo();
            BeanUtils.copyProperties(attrEntity, attrRespVo);
            //        1、设置所属分组和所属分类
            if ("base".equalsIgnoreCase(type)) {
                AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrEntity.getAttrId()));
                if (relationEntity != null && relationEntity.getAttrGroupId() != null) {
                    AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                    attrRespVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
            CategoryEntity categoryEntity = categoryDao.selectById(attrEntity.getCatelogId());
            if (categoryEntity != null) {
                attrRespVo.setCatelogName(categoryEntity.getName());
            }
            return attrRespVo;

        }).collect(Collectors.toList());
        //修改结果集为最新
        pageUtils.setList(respVos);
        return pageUtils;
    }
    @Cacheable(value = "attr",key = "'attrinfo'+#root.args[0]")
    @Override
    public AttrRespVo getAttrInfo(Long attrId) {
        //1、查询基本属性
        AttrRespVo respVo = new AttrRespVo();
        AttrEntity attrEntity = this.getById(attrId);
        BeanUtils.copyProperties(attrEntity, respVo);


        //2、设置分组id和级联菜单路径
        //    2.1设置分组信息，这里把分组的名字也一并设置上
        if (attrEntity.getAttrType().equals(ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode())) {
            AttrAttrgroupRelationEntity relationEntity = relationDao.selectOne(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attrId));
            if (relationEntity != null) {
                respVo.setAttrGroupId(relationEntity.getAttrGroupId());
                AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(relationEntity.getAttrGroupId());
                if (attrGroupEntity != null) {
                    respVo.setGroupName(attrGroupEntity.getAttrGroupName());
                }
            }
        }


        //2.2设置分类信息
        Long catelogId = attrEntity.getCatelogId();
        Long[] catelogPath = categoryService.findCatelogPath(catelogId);
        respVo.setCatelogPath(catelogPath);
        CategoryEntity categoryEntity = categoryDao.selectById(catelogId);
        if (categoryEntity != null) {
            respVo.setCatelogName(categoryEntity.getName());
        }
        return respVo;
    }

    @Transactional
    @Override
    public void updateAttr(AttrVo attr) {
        //基本信息修改
        AttrEntity attrEntity = new AttrEntity();
        BeanUtils.copyProperties(attr, attrEntity);
        this.updateById(attrEntity);

        if (attrEntity.getAttrType().equals(ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode())) {
            // 修改分组关联  pms_attr_attrgroup_relation
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            relationEntity.setAttrGroupId(attr.getAttrGroupId());
            relationEntity.setAttrId(attr.getAttrId());
            //1判断分组属性是更新还是增加  如果原来就没有那就是添加 原来有就是更新

            Integer count = relationDao.selectCount(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            if (count > 0) {
                //更新条件 attr_id
                relationDao.update(relationEntity, new UpdateWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", attr.getAttrId()));
            } else {
                relationDao.insert(relationEntity);
            }
        }


    }

    /**
     * 根据分组id,查到到关联的属性
     */
    @Override
    public List<AttrEntity> getRelationAttr(Long attrgroupId) {
        //1、从pms_attr_attrgroup_relation`根据分组id查到对应的属性id
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_group_id", attrgroupId));
        List<Long> attrIds = entities.stream().map(attrAttrgroupRelationEntity -> attrAttrgroupRelationEntity.getAttrId()).collect(Collectors.toList());
        //2、根据id查询到所有的属性
        if (!CollectionUtils.isEmpty(attrIds)) {
            Collection<AttrEntity> attrEntities = this.listByIds(attrIds);
            return (List<AttrEntity>) attrEntities;
        }
        return null;
    }

    @Override
    public void deleteRelation(AttrGroupRelationVo[] vos) {

        //relationDao.delete(new QueryWrapper<AttrAttrgroupRelationEntity>().eq("attr_id", 1L).eq("attr_group_id", 1L));
        //编写自定义批量删除
        List<AttrAttrgroupRelationEntity> entities = Arrays.asList(vos).stream().map(item -> {
            AttrAttrgroupRelationEntity relationEntity = new AttrAttrgroupRelationEntity();
            BeanUtils.copyProperties(item, relationEntity);
            return relationEntity;
        }).collect(Collectors.toList());

        relationDao.deleteBatchRelation(entities);
    }

    /**
     * 1、获取当前分组没有关联的属性
     */
    @Override
    public PageUtils getNoRelationAttr(Map<String, Object> params, Long attrgroupId) {
        //1、当前分组只能关联自己所属的分类里面的属性 pms_attr_group
        AttrGroupEntity attrGroupEntity = attrGroupDao.selectById(attrgroupId);
        Long catelogId = attrGroupEntity.getCatelogId();

        //2、当前分组只能关联别的分组没有引用的属性 pms_attr_group
        //2.1 当前分类下的其他分组  (条件分类id相等 )
        List<AttrGroupEntity> group = attrGroupDao.selectList(new QueryWrapper<AttrGroupEntity>()
                .eq("catelog_id", catelogId)
        );
        List<Long> attrGroupIds = null;
        if (!CollectionUtils.isEmpty(group)) {
            attrGroupIds = group.stream().map(item -> item.getAttrGroupId()).collect(Collectors.toList());
        }
        //2.2 这些分组关联的属性
        List<AttrAttrgroupRelationEntity> entities = relationDao.selectList(new QueryWrapper<AttrAttrgroupRelationEntity>().in("attr_group_id", attrGroupIds));
        //收集属性id
        List<Long> attrIds = null;
        if (!CollectionUtils.isEmpty(entities)) {
            attrIds = entities.stream().map(item -> item.getAttrId()).collect(Collectors.toList());
        }
        //2.3 从当前分类的所有属性中移除这些属性  ,并只是查询基本属性
        QueryWrapper<AttrEntity> queryWrapper = new QueryWrapper<AttrEntity>().eq("catelog_id", catelogId).eq("attr_type", ProductConstant.AttrEnum.ATTR_TYPE_BASE.getCode()).notIn("attr_id", attrIds);
        //模糊查询
        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)) {
            queryWrapper.and(w -> w.eq("attr_id", key).or().like("attr_name", key));
        }
        IPage<AttrEntity> page = this.page(new Query<AttrEntity>().getPage(params), queryWrapper);
        PageUtils pageUtils = new PageUtils(page);
        return pageUtils;
    }
    /**
     * 在指定的所有属性Id集合里面,挑出检索属性Id
     */
    @Override
    public List<Long> selectSearchAttrIds(List<Long> attrIds) {
        //select attr_id from `pms_attr` where attr_id in (1,2,3) and search_type=1
        return  baseMapper.selectSearchAttrIds(attrIds);
    }
}